Radio Waves

Hertz (Hz) is an SI unit for which of the following measurement?

• distance

• frequency

• mass

• time

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Which of the following materials allows the flow of radio waves?

• conductor

• inductor

• insulator

• resistor

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The following are known scientists. Who among them first predicted that radio waves existed

• Galileo Galilee

• Guglielmo Marconi

• Isaac Newton

• James Clerk Maxwell

Which of the following uses radio waves?

• Mobile phones

• Satellites

• Televisions

• All of the these

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NGSS.HS-PS4-5

It is an intense burst of radio-frequency energy lasting for a fraction of a second.

• Microwave

• Radio pulse

• Sound

• Ultrasound

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Which theory was confirmed by the discovery of Heinrich Hertz?

• Galilean Relativity

• Maxwell’s Electromagnetic Theory

• Newtonian Mechanics

• Special Relativity

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Heinrich Hertz was a famous physicist widely known for his discovery of what?

• Electromagnetic waves

• Gravity

• Magnetism

• Photons

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Based on the electromagnetic spectrum, which of the following do radio waves have?

• High frequency and long wavelength

• High frequency and short wavelength

• Low frequency and long wavelength

• Low frequency and short wavelength

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Radio waves use ultra-high frequency band to deliver which of the following?

• Email

• Music

• Signal

• Text Message

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In what part of the transmitter did Hertz see electrical sparks?

• Battery

• Conductor

• Spark-gap

• Switch